Cross modem modes

Using a DMR connector with a C4FM radio

After you've activated the DMR connector, switch the modem to C4FM mode (or
C4FM Half Deviation mode, if your radio needs that). Only calls in DN (Digital
Narrow) mode will be converted, if you transmit in other modes, DMR users will
only hear silence.

Using a DMR connector with an NXDN radio

After you've activated the DMR connector, switch the modem to NXDN mode.

The source DMR ID of your NXDN calls will be set to the same value as the NXDN
call unless the Always use this ID in cross mode setting is enabled for the
Default cross mode source ID on the Settings page,
NXDN settings section.

Your NXDN calls will be sent to the same DMR ID as the NXDN call's destination
ID unless the Always use this ID in cross mode setting is enabled for the
Default cross mode destination ID on the Settings page,
NXDN settings section.

The destination and source NXDN IDs for an incoming DMR call will be set to the
same value as the incoming call's destination and source ID unless the Always
use this ID in cross mode setting is enabled for the destination/source NXDN
IDs on the Settings page, NXDN settings
section (or if the incoming DMR call's destination or source ID is out of the
NXDN ID range (0-65535)).

Private DMR calls are converted to NXDN group calls.

Using a C4FM connector with a DMR radio

After you've activated the C4FM connector, switch the modem to DMR mode. Only
calls in DN (Digital Narrow) mode will be converted to your DMR radio, if
someone transmits in other modes on the C4FM network, you will hear silence on
your DMR radio.

All calls coming from the C4FM network will be sent as a group call to DMR ID
9 (TG9). Make sure TG9 is the TX contact of your DMR radio's current channel,
or it's in an RX group list which is assigned to the current channel in the
radio, otherwise the squelch won't open and you won't hear the calls.

Using a C4FM connector with an NXDN radio

After you've activated the C4FM connector, switch the modem to NXDN mode. Only
calls in DN (Digital Narrow) mode will be converted to your NXDN radio, if
someone transmits in other modes on the C4FM network, you will hear silence on
your NXDN radio.

If an incoming call's source callsign can be parsed into a number, and the
number's range is in the NXDN ID range (0-65535), then it will be it's source
NXDN ID. Otherwise the
Default cross mode source ID will be used.

All calls coming from the C4FM network will be sent as a group call to
the Default cross mode destination ID. If you
don't hear calls on your radio then make sure this ID is in the SelCall list,
or it's the TX contact of the current channel.

Using an NXDN connector with a DMR radio

After you've activated the NXDN connector, switch the modem to DMR mode.

The source NXDN ID of your DMR calls will be set to the same value as the DMR
call unless the Always use this ID in cross mode setting is enabled for the
Default cross mode source ID on the Settings page,
NXDN settings section.

Your DMR calls will be sent to the same NXDN ID as the DMR call's destination
ID unless the Always use this ID in cross mode setting is enabled for the
Default cross mode destination ID on the Settings page,
NXDN settings section, or the destination DMR
ID is out of the NXDN ID range (0-65535). In this case, the Default cross
mode destination ID will be used for the NXDN call.

The destination and source DMR IDs for an incoming NXDN call will be set to the
same value as the incoming call's destination and source ID unless the Always
use this ID in cross mode setting is enabled for the destination/source NXDN
IDs on the Settings page, NXDN settings
section.

Make sure the destination ID of the NXDN calls (the NXDN talkgroup) is the TX
contact of your DMR radio's current channel, or it's in an RX group list which
is assigned to the current channel in the radio, otherwise the squelch won't
open and you won't hear the calls.

Using an NXDN connector with a C4FM radio

After you've activated the NXDN connector, switch the modem to C4FM mode (or
C4FM Half Deviation mode, if your radio needs that). Only calls in DN (Digital
Narrow) mode will be converted, if you transmit in other modes, NXDN users will
only hear silence.

If an incoming C4FM call's source callsign can be parsed into a number, it will
be used as the source NXDN ID. Otherwise the
[Default cross mode source ID] will be used. The default ID will be used if the
Always use this ID in cross mode setting is enabled for the Default cross
mode source ID on the Settings page,
NXDN settings section.